Chiming in on my S10+. You all forgot you can LEAVE messages on imessage. That is one thing I can grip about when people won't remove you from the chat. You can mute notifications or block them but not leave the group, quick like, love etc. Regardless I've been using the galaxy line awhile and I send pics and vids just fine. If I want it to be high quality (only vids really), I send it via fb messenger. I've never had an issue or a time I couldn't send something easily in a few seconds in high res via my Galaxy to ANYONE.
Google and Sammy just need to actually come up with something that is encrypted, and works smoothly with IOS. Other than that, my phone imo overall is better in a plethora of ways.
iOS people are users, Android people are the admins. ??????